R help - Jan 2008 - scatterplot3d with categorical data

Dear users,

I'm trying to produce a 3d bar plot but the x and y dimensions have
categorical
data -- so I only want 3 points on each axis. So I try:


require(scatterplot3d)

   mymat<-data.frame(
   x=c(1,1,1,2,2,2,3,3,3),
   y=c(1,2,3,1,2,3,1,2,3),
   z=c(1,2,3,4,5,6,7,8,9))
   scatterplot3d(mymat,
   type="h", lwd=5, pch=" ",
   xlab="xlabel", ylab="ylabel", zlab="zlabel",
   xlim=c(1,3), ylim=c(1,3),
   lab=c(3,3),
   x.ticklabs=c("Low","Medium","High"),
y.ticklabs=c("Green","Blue","Black"),
   main="My Bar Plot")

But I still get x ticks at 1, 1.5, 2, 2.5, 3 on both x and y axes. I
thought lab
controlled this (according to the documentation).

What am I doing wrong, or is there some restriction on the way the
function works?

Cheers,
Geoff Russell

hits=-2.6 tests=BAYES_00
X-USF-Spam-Flag: NO

Dear Geoff,

scatterplot3d was never intended to draw a plot for categorical data, 
but you can tweak it as follows:


-  Note that the help page says (stolen from ?par) "The values of x and 
y give the (approximate) number of tickmarks on the x and y axes." where 
"approximate" is stressed in this context. It works for me to use lab
=
c(2,2)

-  add argument mar = c(3,3,3,3)

-  add argument y.margin.add = 0.15,


Best,
Uwe

Geoff Russell wrote:
> Dear users,
> 
> I'm trying to produce a 3d bar plot but the x and y dimensions have
categorical
> data -- so I only want 3 points on each axis. So I try:
> 
> 
> require(scatterplot3d)
> 
>    mymat<-data.frame(
>    x=c(1,1,1,2,2,2,3,3,3),
>    y=c(1,2,3,1,2,3,1,2,3),
>    z=c(1,2,3,4,5,6,7,8,9))
>    scatterplot3d(mymat,
>    type="h", lwd=5, pch=" ",
>    xlab="xlabel", ylab="ylabel",
zlab="zlabel",
>    xlim=c(1,3), ylim=c(1,3),
>    lab=c(3,3),
>    x.ticklabs=c("Low","Medium","High"),
y.ticklabs=c("Green","Blue","Black"),
>    main="My Bar Plot")
> 
> But I still get x ticks at 1, 1.5, 2, 2.5, 3 on both x and y axes. I
> thought lab
> controlled this (according to the documentation).
> 
> What am I doing wrong, or is there some restriction on the way the
> function works?
> 
> Cheers,
> Geoff Russell
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

On Jan 26, 2008 11:23 PM, Duncan Murdoch <murdoch at stats.uwo.ca>
wrote:
>
> On 26/01/2008 5:24 AM, Geoff Russell wrote:
> > Dear users,
> >
> > I'm trying to produce a 3d bar plot but the x and y dimensions
have categorical
> > data -- so I only want 3 points on each axis. So I try:
> >
> >
> > require(scatterplot3d)
> >
> >    mymat<-data.frame(
> >    x=c(1,1,1,2,2,2,3,3,3),
> >    y=c(1,2,3,1,2,3,1,2,3),
> >    z=c(1,2,3,4,5,6,7,8,9))
> >    scatterplot3d(mymat,
> >    type="h", lwd=5, pch=" ",
> >    xlab="xlabel", ylab="ylabel",
zlab="zlabel",
> >    xlim=c(1,3), ylim=c(1,3),
> >    lab=c(3,3),
> >    x.ticklabs=c("Low","Medium","High"),
y.ticklabs=c("Green","Blue","Black"),
> >    main="My Bar Plot")
> >
> > But I still get x ticks at 1, 1.5, 2, 2.5, 3 on both x and y axes. I
> > thought lab
> > controlled this (according to the documentation).
> >
> > What am I doing wrong, or is there some restriction on the way the
> > function works?
>
> I don't know the answer about scatterplot3d, but you can get
> approximately what you want with the rgl package using
>
>
>    plot3d(mymat,
>      type="h",
>      xlab="xlabel", ylab="ylabel",
zlab="zlabel",
>      xlim=c(1,3), ylim=c(1,3),
>      size=5,
>      axes=FALSE,
>      main="My Bar Plot")
>
>      axis3d("x", at=1:3,
labels=c("Low","Medium","High"))
>      axis3d("y", at=1:3,
labels=c("Green","Blue","Black"))
>      grid3d("z", n=3)
I couldn't install rgl due to the following problems:

g++ -I/usr/local/lib/R/include -I/usr/local/lib/R/include -DHAVE_PNG_H
-Iext -I/usr/local/include    -fPIC   -c par3d.cpp -o par3d.o
par3d.cpp: In function 'void Specify(const char*, SEXPREC*)':
par3d.cpp:128: error: invalid conversion from 'const char*' to
'char*'
par3d.cpp:128: error:   initialising argument 1 of 'Rboolean
Rf_psmatch(char*, char*, Rboolean)'
par3d.cpp:135: error: invalid conversion from 'const char*' to
'char*'
par3d.cpp:135: error:   initialising argument 1 of 'Rboolean
Rf_psmatch(char*, char*, Rboolean)'
make: *** [par3d.o] Error 1
chmod: cannot access `/usr/local/lib/R/library/rgl/libs/*': No such
file or directory
ERROR: compilation failed for package 'rgl'

But Uwe's suggestion with scatterplot3d gives a better result than I had. 
But I
might use multiple 2d plots instead.

Many thanks,

Geoff.


>
> You might prefer to change the mouse controls to
>
>      par3d(mouseMode=c("zAxis","zoom","fov"))
>
> so that the main mouse button does rotation about the vertical axis,
> rather than completely general rotation.
>
> Duncan Murdoch
>
>


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